CN202373956U - Leakage protection device for mine channel power device - Google Patents
Leakage protection device for mine channel power device Download PDFInfo
- Publication number
- CN202373956U CN202373956U CN2011205458041U CN201120545804U CN202373956U CN 202373956 U CN202373956 U CN 202373956U CN 2011205458041 U CN2011205458041 U CN 2011205458041U CN 201120545804 U CN201120545804 U CN 201120545804U CN 202373956 U CN202373956 U CN 202373956U
- Authority
- CN
- China
- Prior art keywords
- checkout gear
- current
- control device
- output
- leakage protection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a leakage protection device for a mine channel power device, comprising an alternating-current and direct-current conversion device (1), a control device (2) and a detecting device (3), wherein the input end of the alternating-current and direct-current conversion device (1) is set to be connected with a three-phase alternating-current power supply of the power device, and the output end of the alternating-current and direct-current conversion device (1) is set to be connected with the detecting device (3); the output end of the detecting device (3) is set to be connected with the control device (2); the output end of the control device (2) is set to be connected with a driving relay; and the detecting device (3) is internally provided with a resistor capable of adjusting a standard direct current value. Therefore, according to the leakage protection device disclosed by the utility model, the leakage protection performance is improved.
Description
One, technical field
The utility model relates to a kind of earth leakage protective device that is used for the drive electric installation, and especially a kind of adaptation is used for being full of the earth leakage protective device of electric installation of the drive of explosive mist.
Two, background technology
In the mine produced, electric driver was the vitals that guarantees mining equiment work, and electric installation also is the capital equipment that guarantees drive safety; Therefore the earth leakage protective device that is used for the drive electric installation is an important electric component; In the safety regulations in coal mine, underground power supply system earth leakage protective is most important protection, and colliery earth leakage protective is taked the additional dc power supply detection mode now; Because the circuit devcie in the additional dc power supply detection mode disperses and exposes; Increase unsafe factor, and do not had general communication interface, can not realize telemonitoring.
Three, summary of the invention
In order to overcome above-mentioned technical disadvantages, the purpose of the utility model provides a kind of earth leakage protective device that is used for the drive electric installation, has therefore improved earth leakage protective performance.
For achieving the above object; The technical scheme that the utility model is taked is: include DC-AC conversion device, control device and checkout gear; The input of DC-AC conversion device is set to be connected with the three-phase alternating-current supply of electric installation; The output of DC-AC conversion device is set to be connected with checkout gear; The output of checkout gear is set to be connected with control device, and the output of control device is set to and drives relay and be connected, and in checkout gear, is provided with the resistance of adjustable standard DC current values.
DC-AC conversion device converts the power supply of electric installation to direct current by alternating current, and established standards DC current values in checkout gear is when electrical network insulation against ground resistance drops to when to a certain degree promptly leaky taking place; Current value through checkout gear will increase, and when reaching standard value, checkout gear sends a signal to control device; Control device is given driven signal of relay, thereby cut off main circuit power, realize earth leakage protective; Owing to designed DC-AC conversion device, control device and checkout gear; Can be directly and the electric installation in the drive directly link together, avoided intermediate conveyor, therefore improved earth leakage protective performance.
The utility model has designed, and also includes communication device, and the output one tunnel of checkout gear is set to be connected with control device, another road is set to be connected with communication device, and communication device is provided with output RS485 signaling interface.
The technique effect of the utility model is: the utility model is integrated with creepage protection function; Has reliable protect measure; Reduced the unsafe factor in the electrical network of colliery, input and output are adjustable, and are structure-integrated; Use easy to operate; Simultaneously, this module also can be embedded in the electric power system earth leakage protective occasion of other three-phase isolated neutrals, is applicable to that electric pressures such as mobile substation low-pressure side guard box, total feeding switch, magnetic starter, unit switch are the colliery control appliance below the 3300V.
Four, description of drawings
Accompanying drawing 1 is the sketch map of the utility model.
Five, embodiment
Accompanying drawing is an embodiment of the utility model; Specify present embodiment in conjunction with accompanying drawing; Include DC-AC conversion device 1, control device 2, checkout gear 3 and communication device 4; The input of DC-AC conversion device 1 is set to be connected with the three-phase alternating-current supply of electric installation; The output of DC-AC conversion device 1 is set to be connected with checkout gear 3, and the output one tunnel of checkout gear 3 is set to be connected with control device 2, another road is set to is connected with communication device 4, and the output of control device 2 is set to and drives relay and be connected; Communication device 4 is provided with output RS485 signaling interface, in checkout gear 3, is provided with the resistance of adjustable standard DC current values.
DC-AC conversion device 1 converts the power supply of electric installation to direct current by alternating current; Established standards DC current values in checkout gear 3, when electrical network insulation against ground resistance drops to when to a certain degree promptly leaky taking place, the current value through checkout gear 3 will increase; When reaching standard value; Checkout gear 3 sends a signal for control device 2, control device 2 is given driven signal of relay, thereby cut off main circuit power; Realize earth leakage protective, the signal of the DC current values of checkout gear 3 is connected with Long-Range Surveillance Unit through communication device 4.
The characteristics of the utlity model has down:
1, owing to designed DC-AC conversion device 1, control device 2 and checkout gear 3, can be directly and the electric installation in the drive directly link together, avoided intermediate conveyor, so improved earth leakage protective performance.
2, owing to designed DC-AC conversion device 1, control device 2 and checkout gear 3, made things convenient for integrated and miniaturization, the module outward appearance, powerful embedding function has very big promotional value.
3, output RS485 signal is supported general Modbus agreement.
4, can be according to different demands scalable output detection signal size; Autonomous select the startup of detection of electrical leakage and stop, also can doing insulation and detecting and use.
In being used for the earth leakage protective device technical field of drive electric installation; Every input that includes DC-AC conversion device 1 is set to be connected with the three-phase alternating-current supply of electric installation; The output of DC-AC conversion device 1 is set to be connected with checkout gear 3; The output of checkout gear 3 is set to be connected with control device 2; The output of control device 2 is set to and drives relay and be connected, and the technology contents of resistance that in checkout gear 3, is provided with adjustable standard DC current values is all in the protection range of the utility model.
Claims (2)
1. earth leakage protective device that is used for the drive electric installation; It is characterized in that: include DC-AC conversion device (1), control device (2) and checkout gear (3); The input of DC-AC conversion device (1) is set to be connected with the three-phase alternating-current supply of electric installation; The output of DC-AC conversion device (1) is set to be connected with checkout gear (3); The output of checkout gear (3) is set to be connected with control device (2); The output of control device (2) is set to and drives relay and be connected, and in checkout gear (3), is provided with the resistance of adjustable standard DC current values.
2. the earth leakage protective device that is used for the drive electric installation according to claim 1; It is characterized in that: also include communication device (4), the output one tunnel of checkout gear (3) is set to be connected with control device (2), another road is set to is connected with communication device (4), and communication device (4) is provided with output RS485 signaling interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205458041U CN202373956U (en) | 2011-12-23 | 2011-12-23 | Leakage protection device for mine channel power device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205458041U CN202373956U (en) | 2011-12-23 | 2011-12-23 | Leakage protection device for mine channel power device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202373956U true CN202373956U (en) | 2012-08-08 |
Family
ID=46597647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205458041U Expired - Fee Related CN202373956U (en) | 2011-12-23 | 2011-12-23 | Leakage protection device for mine channel power device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202373956U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102882183A (en) * | 2012-10-19 | 2013-01-16 | 深圳市晶福源电子技术有限公司 | Output leakage protection device |
| CN102931631A (en) * | 2012-11-15 | 2013-02-13 | 深圳市晶福源电子技术有限公司 | Output earth leakage protection device for high-voltage and direct-current power supply system |
-
2011
- 2011-12-23 CN CN2011205458041U patent/CN202373956U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102882183A (en) * | 2012-10-19 | 2013-01-16 | 深圳市晶福源电子技术有限公司 | Output leakage protection device |
| CN102882183B (en) * | 2012-10-19 | 2014-03-26 | 深圳市晶福源电子技术有限公司 | Output leakage protection device |
| CN102931631A (en) * | 2012-11-15 | 2013-02-13 | 深圳市晶福源电子技术有限公司 | Output earth leakage protection device for high-voltage and direct-current power supply system |
| CN102931631B (en) * | 2012-11-15 | 2014-03-26 | 深圳市晶福源电子技术有限公司 | Output earth leakage protection device for high-voltage and direct-current power supply system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120808 Termination date: 20151223 |
|
| EXPY | Termination of patent right or utility model |